I have the Marshall MG100HDFX 100-Watt Amplifier Head, the fuse was blown and there is no audio coming out of the the spkr jacks. this is how i received the amp and have no further info to diagnose. im going to assume its the output transistor. i need to know where i can get a new one
Music - Marshall - MG100HDFX 100-Watt Amplifier Head
Answers & Comments
If the output transistors have shorted, it is LIKELY that several others in the drivers and even farther back have also gone. HOWEVER some Marshall amps use one or more TDA7293 chips. These require installation using heat sink compound. The TDA7293 can be found at:
http://search.digikey.com/scripts/DkSearch/dksus.dll?lang=en&site=US&WT.z_homepage_link=hp_go_button&KeyWords=tda7293
They come in two sexes depending on which way the leads are bent for installation. You have to see how yours are mounted relative to the circuit board. Cost about $6.